Loom for weaving narrow wire fabric



Nov. 11 1924. 1,514,951

A. J- CHEVRETTE v LOOM FOR WEAVING NARROW WIRE FABRIC Filed April 13 1922 I5 Sheets-Sheet 1 Nov; 11 1924.

I A. J. CHEVRETTE LOOM FOR WEAVING NARROW WIRE FABRIC Filed April 1:5,

1922 3 Sheets-Sheet 2 IIIIIIIIIIIIA Iwv-ewi 4 J (fiery/z Mitt or 176:?5

A. J. CHEVRETTE LOOM FOR WEAVING NARROW WIRE FABRIC Nov. 11 1924. 1,514,951

Filed April 13, 1922 3 Sheets-Sheet 5 Inventor 4 .7 (hevrettc aw o-r-mgys Masai F T y F i Q AUG-USTIN J. GHEVRETTE, OF WORCESTER. MASSACHUSETT$, ASSIGNOR TO GROMPTON 82; KNOXVLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

LOOIVI FOR WEAVI-NG- NARROW WIRE FABRIC.

Application filed April 13, 1922. Serial No. 552,381.

To all whom it may concern:

Be it known that I, Aueusrm J. Cnnvnn'rrr, a citizen of the United States, residing at 37 Illinois St, Worcester, in the county of WVorce'ster and the State of Massachuetts, have invented a new and useful Loom for Weaving Narrow Wire Fabric, of which the following is a specification.

This invention relates to a loom capable of general application in certain lines of work but particularly designed for weaving narrow wire fabricor what might be termed wire tape. Such fabric is now in use for special purposes such as reinforcing the beads in automobile tires.

It is the general object of my invention to provide a loom for weaving such fabric, capable ofproducing a satisfactory fabric by the, employment of a much simplified loom structure.

A further object of my invention is to provide an improved method of operation by which such a fabric may be produced.

With these general objects in view, an important feature of my invention relates to the provision of a lay or shuttle support fixed in the loom and having no forward or rearward movement. A further feature of my invention relates to the provision of means for reciprocating the shuttle and for taking up thefinished fabric in timed relation to the movement of the harness motion.

I also provide a firm frictional resistance tothe withdrawal of the filling from the shuttle as it is reciprocated on its fixed shuttlesupport.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claim.

A. preferred form of my invention is shown in the drawings in which- Fig. 1 is a front elevation of a loom embodying my invention;

Fig. 2 is a detail sectional view, taken along the line 22 in Fig. 1; v i

Fig. 3 is a sectional side elevation of the loom, taken along the line 3-3 in Fig. 1;

Fig. 4: is a detail rear elevation, looking in the direction of the arrow 4 in Fig. 3;

Fig. 5 is a plan view of the loom; and

Fig. 6 is a transverse sectional elevation of the shuttle.

Referring to the drawings, I have shown a loom having a frame comprising loom sides 10, an arch 11 a breast beam 12, and a lay or shuttle support 13, firmly secured in fixed position on the loom sides 10. Harnesses 14 are provided for alternately raising and springs 19 which are disposed between nuts T 20 on the bolts 18 and washers 21 forced against the outer faces of the 'rolls'15. The rolls 15 are thus caused to frictonally engage the posts 16 with any desired pressure, thus providing suitable tension for the warp wires. .rear of the loom sides 10 to W' to the harnesses 1 1. v

A stand 23 is secured to the breast beam by bolts 24; and constitutes asupport forthe woven fabric as it is drawn forward by take-up; mechanism to be described. A U- shaped guide 25 is pivoted at 26 on they support .23 and is provided with a notch or recess 27 to receive the fabric and to direct it to the take-up roll. The guide 25 may be swung upward upon itspivots to remove it from operative position for any desired purpose.

The take-up mechanism maybe of any suitable form and is shown herein as comprising a take-up roll or drum 30 rotatably mounted on a shaft 31 and'provided with a ratchet wheel 32 (Fig. 3) engaged by a feed pawl 33 on a bell crank lever 34. A link .35 is adjustably secured to the slotted arm of the lever 34 and connects the arm with a lever 86 having a cam roll'37 engaged by a take-up cam 38 on the driving shaft 39. This shaft may be rotatedby any suitable driving mechanism (not shown). 1

The take-up drum 30 is preferably provided with a roughened or frictioned outer surface so that a single turn of the fabric around the drum will permit firm engagement of the fabric thereby. A holding pawl #10 (Fig. 3) prevents backward movement of the drum as the feed pawl 33 is guide the wires A. guideroll 22 is mounted at the,

withdrawn by a spring 41 for another feeding stroke.

A Winding roll 42 is loosely mounted on a rod or shaft 43 ig. 3) and is connected by a friction clamp 44 to a winding gear 45. The gear 45 meshes with the gear 46 Fig. 3) having a ratchet wheel 47 engaged by a feed pawl 48 on the front end of the cam lever 36.

Every revolution of the cam 38 accordingly produces an advance movement of the take-up roll or drum 30 and also an advance movement of the winding gear 45 somewhat in excess of the movement required to wind up the fabric delivered to the winding roll 42. The frictional connection between the gear 45 and the roll 42 permits the gear to slip when the roll has been sufficiently advanced.

Any suitable mechanism may be provided for passing the filling wire F through the shed formed by the warp wires W. In the drawings, I have shown a shuttle 50 within which a spool 51 is mounted and having friction plates 52 between which the wire F is drawn. A friction arm or brake 53 also engages the spool 51 to retard rotation thereof.

The shuttle 50 is mounted in guide-ways on the inclined front surface of the lay 13 and rests upon a cam plate 54 (Fig. 3), the upper edge of which constitutes a race for the shuttle.

A shuttle driving member 55 (Fig. 1) is pivoted at 56 to a slide 57 supported in a guide-way 58 in the lower part of the cam plate 54. A link 59 connects the slide 57 to an actuating or pick arm 60 (Fig. 1) pivotally supported at 61 and connected by a link (32 to a crank pin 63 fixed in a disc 64 se cured to the front end of a shaft 65.

At its rear end, the shaft 65 (Fig. 5) is connected through bevel gears 66 and spur gears 67 to the driving shaft 39. The slide 57v and member 55 are thus regularly reciprocated during the operation of the loom. The member 55 is provided with a pair of driving pins 58 and 59 (Fig. 1) in its upper edge adapted to cooperate with holes in the bottom plate of the shuttle 50. A diamond-shaped cam block 60, shown in dotted lines in Fig. 1, is pivotally mounted on the rear face of the member 55 and extends into a cam groove 61 in the cam plate 54.

\Vhen the shuttle 50 is in its right hand position, as shown in Fig. 1, the right hand pin 58 cooperates with the shuttle and will move the shuttle to the left as the slide 57 is thus moved by the actuating arm 60. As the shuttle reaches mid position in the shed, the cam ilock 60 is moved downward by the cam groove 61, rocking the member 55 upon its pivot 56, withdrawing the pin 58, and

advancing the pin 59 to operatively engage the shuttle 50 and complete its movement to the left.

The shut-tle is thus positively driven through the shed, but the driving connections are shifted to prevent engagement thereof with the wires W. This particular shuttle driving mechanism is illustrative only and other suitable mechanism may be substituted therefor.

The parts are so timed that the shuttle 55 will be substantially at its extreme limit of movement to the right or to the left when the harnesses are moved to change the shed. The filling wire F is held under tension by the friction plates 52 of the shuttle and extends obliquely rearwardly as shown in Fig. 5. At the same time that the shed is closed, the take-up mechanism operates to draw a portion of woven fabric under the guide 27. The filling wire F is thus firmly drawn obliquely across the fabric, producing a smooth selvage and following a zigzag path lengthwise of the fabric as clearly indicated in Fig. 5.

It should be particularly noted that the filling is never beaten up into the shed but is gripped and held under tension in its oblique rearward position. I am thus able to produce a satisfactory narrow wire fabric with an exceedingly simple loom mechanism in which the shuttle moves in a fixed path and in which no provision is made for forward and rearward movement of the lay.

Having thus described my invention and the advantages thereof, it will be evident that changes and modifications can be made therein within the spirit and scope of my invention as set forth in the claims, and I do not wish to be otherwise limited to'the details herein disclosed, but what I claim 1s:-

In a loom, a plurality of Warp elements, means to part said elements to form a Warp shed, a fixed lay, a shuttle, means to reciprocate said shut-tle on said lay entirely through the warp shed to insert a filling in said shed, said filling being frictionally drawn obliquely rearward from the fell of the fabric by said shuttle, and means to change the warp shed and grip and hold said filling while the filling in thus obliquely rearwardly extended and held by AUGUSTIN J. CHEVRETTE. 

